In his interview as seen in Robotech: Battlecry (2002) (VG), when asked if he plays video games, Cam claims that during his time of his younger days, video games did not exist at those times during the 1950s to the early 1980s and that he does not have the dexterity to play video games. That is why he voices for various entertainments including video games instead of choosing to play video games.

Proud sponsor of Camp Will-A-Way, a camp for the mentally and/or physically disabled.

In 1999, released his album "Inside Out." The album contains various love songs by various artists including James Taylor and Carly Simon reworked and performed in gay perspective.

Is also a part-time Disney Channel announcer.

Voice can be heard as a back-up in the 3rd Bass rap lyrics of "Pop Goes the Weasel".

Speaks Spanish fluently.

Was part of the original uncredited 1989 English voice cast for Hayao Miyazaki's Nausicaä of the Valley of the Wind (1984) (aka Nausicaa of the Valley of the Wind), which at the time was retitled "Warriors of the Wind", cut roughly 20 to 30 minutes of footage and changed a number of characters' names, much to the anger of Miyazaki, himself. Clarke voiced "Asbel of Pejite", whose name was changed to "Prince Milo". When Walt Disney Studios re-released "Nausicaa" in America in 2005 with the restored footage and a new voice cast which followed the film's proper dialogue and proper character names, Clarke's performance was replaced by Shia LaBeouf.

Was the original English voice of "Kaneda" in the original English language version of Akira (1988) by Streamline Productions. When distribution rights changed in America from Streamline to Animaze in 2001, the original English language version was replaced, and Clarke's performance as "Kaneda" was replaced by Johnny Yong Bosch.

Studied voice acting under voice actor Michael Bell. One of the most important things Bell taught him was to never audition with a voice he couldn't sustain, which would damage his voice as well as alienate potential clients.

He auditioned for the voice of "Hadji" for the 1986 version of Jonny Quest (1986).